<style type="text/css">
html { 
    height: 100%
}
   
body {
      height: 100%; 
    margin: 0px; 
    padding: 0px
     
}
#mapa { 
  height: 100%;
  float:right;
  width:70%;
}
 
#caminho{
  float:left;
  width:25%;
  height:10%;      
   }
</style>